Well, if you are not confused yet I would like try and confuse you by saying that the 50mm f/1.8 is also an excellent lens and can be had new for about $130 USD. The main advantage if this lens is that they are more readily available than either the f/2.0 or f/1.4 lenses. If you can pick up a f/2.0 for around $30 go for it, but if you buy the f/1.8 for around $130 new you are not going to feel like you paid too much for this fine lens, as an added bonus the new f/1.8 works great on any Nikon film body. All the advantages of the f/2.0 and a lower price than the f/1.4.